Lesion resection method

Abstract

In a full thickness resection using a medical stapler, when preprocessing of the resection, one may cauterize the peripheral tissues of the lesion site and perform the marking with a high-frequency treatment device to determine a guide of a region for the resection. However, when a planar marking is formed by cauterizing the peripheral tissues by a high-frequency treatment device, it may be difficult to visually recognize the marking in an endoscopic visual field. A lesion resection method can include forming a three-dimensional marking in peripheral tissues of a lesion; grasping the lesion by a grasping forceps; pulling the marking to a hand side of a staple ejection position of a stapler by pulling the grasping forceps grasping the lesion; ejecting a staple from the stapler to ligate the peripheral tissues of the lesion; and resecting the lesion.

What is claimed is: 
     
         1 . A lesion resection method, comprising:
 positioning a marker in peripheral tissues of a lesion between the lesion and a staple; and   resecting the lesion by cutting between the marker and the staple.   
     
     
         2 . The lesion resection method according to  claim 1 , further comprising:
 positioning a first marker at a first part of the peripheral tissues; and   positioning a second marker at a second part of the peripheral tissues.   
     
     
         3 . The lesion resection method according to  claim 2 ,
 wherein the lesion resection method is performed by observing the peripheral tissues in an endoscopic visual field,   the first part of the peripheral tissues is disposed on an upper side of the lesion in the endoscopic visual field when retracting the marker to a more proximal side than a staple ejection position of a stapler by using grasping forceps to grasp the lesion, and   the second part of the peripheral tissues is disposed on a lower side of the lesion in the endoscopic visual field when retracting the marker to the more proximal side than the staple ejection position of the stapler by using grasping forceps to grasp the lesion.   
     
     
         4 . The lesion resection method according to  claim 3 , wherein the first marker includes at least one three-dimensional marker. 
     
     
         5 . The lesion resection method according to  claim 1 , further comprising disposing a three-dimensional marker being a clip on the peripheral tissues. 
     
     
         6 . The lesion resection method according to  claim 1 , further comprising raising up and ligating the peripheral tissues with the marker being a three-dimensional marker. 
     
     
         7 . The lesion resection method according to  claim 1 , wherein the marker is a three-dimensional marker. 
     
     
         8 . A treatment method, comprising:
 positioning a marker at peripheral tissues of a lesion between the lesion and a staple ejection position; and   forming a ligation portion in the peripheral tissues of the lesion by ejecting a staple from the staple ejection position,   wherein the marker is positioned between the ligation portion and the lesion.   
     
     
         9 . The treatment method according to  claim 8 , further comprising:
 positioning a first marker at a first part of the peripheral tissues; and   positioning a first marker at a second part of the peripheral tissues.   
     
     
         10 . The treatment method according to  claim 9 ,
 wherein the treatment method is performed by observing the peripheral tissues in an endoscopic visual field,   the first part of the peripheral tissues is disposed on an upper side of the lesion in the endoscopic visual field when retracting the marker to a more proximal side than the staple ejection position of a stapler using grasping forceps to grasp the lesion, and   the second part of the peripheral tissues is disposed on a lower side of the lesion in the endoscopic visual field when retracting the marker to the more proximal side than the staple ejection position of the stapler by using grasping forceps to grasp the lesion.   
     
     
         11 . The treatment method according to  claim 10 , wherein the marker includes at least one three-dimensional marker. 
     
     
         12 . The treatment method according to  claim 11 , further comprising indwelling the three-dimensional marker being a clip, such that a distal end of the clip is positioned in a direction separating away from the lesion. 
     
     
         13 . The treatment method according to  claim 10 , wherein the second marker includes at least one planar marker. 
     
     
         14 . The treatment method according to  claim 10 , wherein the second marker includes at least one three-dimensional marker. 
     
     
         15 . The treatment method according to  claim 14 , further comprising:
 indwelling the three-dimensional marker being a clip, such that a distal end of the clip is positioned at a direction approaching the lesion.   
     
     
         16 . The treatment method according to  claim 8 , further comprising disposing the marker as a three-dimensional marker being a clip. 
     
     
         17 . The treatment method according to  claim 16 , further comprising disposing the clip such that a distal end of the clip is positioned in a direction approaching the lesion. 
     
     
         18 . The treatment method according to  claim 16 , further comprising disposing the clip such that a distal end of the clip is positioned in a direction separating from the lesion. 
     
     
         19 . The treatment method according to  claim 8 , further comprising raising up and ligating the peripheral tissues with the marker being a three-dimensional marker. 
     
     
         20 . The treatment method according to  claim 8 , wherein the marker is a three-dimensional marker.